Blighted Summoning Prodigy on Summoners: makes them worse?

[Delmuir]

So I maxed Magic on a summoner just to test the Blighted Summoning prodigy and, as far as I can tell it makes my summons worse. Am I missing something?

Here's my critique:

1. It gives each summon a new ability which means they use their main ability less often.

2. Said new ability is extremely weak, even with my magic stat at 60.

3. It encourages use of minor summons (who can have some pretty good new abilities) but because the summoner has such short cool-downs, there's really no point… just blast away with your best summons.

Have I missed some aspect to it or is this prodigy just terrible for a Summoner? It seems to make more sense on a Necro as you summon all at once.

[HousePet]

Shame on you for infecting your natural allies with evil blight corruption!

Also, the talents are a bit weak and it doesn't help that they scale from level 2 to level 3.
Another big problem is that the ai on about half the Summoner critters is set to use talents rarely.