Nobody is forcing you to do anything, being a meta slave is a choice.
You can accept the DPS loss, switch out 2 talents and play with a more fun build. Most people don’t utilize their build to the maximum potential anyway so if you can do better by having one less button to press you can consider it a win.
For blitz one can play frost with this build with frostfire hero without glacial, top 50 dont take glacial and the main dmg comes from frostfire bolt and ice lance. This is one popular build for example that dont use glacial. This build makes your frostfire bolt hit 3 targets while you have icy veins active and it reminds bit of the necrolord frost from shadowlands.
They have to pick some stuff to synergize with the hero talents, or else it’ll all revolve around casting frostbolt like in vanilla. The glacial spike talent is a choice node, you can pick the talent that enhances Shifting Power instead.
If you want to talk how a hero talent forces certain talents lets talk keeper of the grove requiring treeants or mountain thane forcing thunder clap.
I generally dislike how certain specs are forced to play a certain way.
In SL my demo was able to not play with tyrant. It may have been the better choice to do so but it was at the end of the tree with two other choices.
Now it’s middle of the tree cause someone at blizzard liked it and I don’t have any choice but to use it
The hero talent designs are bad overall on all classes and specs Ive seen so far but do you play pvp or pve. In pvp mages play frostfire hero which doesnt have glacial on the talents nor do they play with glacial from their spec talents. Builds for casting frostfire bolts and lance is better and frostfire bolt is hitting 3 targets during icy veins, so there is that if that is of any help.
I dont like hero talent designs on any of my classes but I make them work and I acknowledge this is temporary, next expansion we can have something worse or better. Lets adapt to what the situation currently is and listen ppl trying provide help and find solutions instead continue repeat same.
Its not the biggest issue in the game currently either on grand scale of things but bad design nevertheless. Ive said the same thing to my friends but wouldnt made thread for it nor especially this late as hero talents have been known for half year. You are making this thread kinda late related this matter but I guess if you feel need for it then it could be made to mage forum, related spellslinger hero trees design and glacial which were the issue you presented, instead of make thread to speak about hero talents design flaws as whole, you made it specifically for single spec of mage and one hero tree for one optional talent.