Skills with diminishing value at high levels?

So I've got multiple reasonably high-level chars already, and I'm starting a wizard. I've got the equipment to multibox and have become pretty comfortable with that setup, so at any given time, I can have cleric support, mob-killing power, etc. as needed.

Obviously, between buffs, heals, kills on demand, personal experience, and resources available to me, that means my wizard levels are going to be pretty easy for a long time. So even if I were to skip certain skills that might normally be important to soloing, I could still easily get away with it and have SP to spare later on.

My question is this: Are there any wizard skills / spells that I might want to skip or delay in such a manner, in order to make room for other, more useful skills (including element masteries, say)?

I'm thinking specifically of skills that are good initially, and that are generally recommended by wizard guides since they facilitate soloing, but whose usefulness eventually drops off, either becoming worthless at high levels or just of somewhat dubious value. Or maybe they're useful at any level, but you can live without them for a while if you have the right support.

For example, take the cleric's Celestial Guardian's Seal. Since it's a number-based boost to regen, rather than percent-based, it has diminishing effect as you level up. It looks enticing, and it lets an early cleric boost their regen and save on meditation time / need for potions, but ultimately it's an SP cost that might be best left for later. (This isn't a perfect example, since most clerics will max it eventually anyway, but you get the idea.)

An example that immediately springs to mind is Morning Dew. If I assume I'll either have healing support or have a tank that requires none, healing isn't so useful for a while. It's already on the "secondary" list in the Wizard Guide for Newcomers, but my situation reduces its value even further.

Another possible / hypothetical example would be spells that max out early (e.g. before about 50-60) and become less useful beyond that point. I notice that Pyrogram, Gush, and Stone Rain are all maxed out by the time you hit 51, but do you continue to use those in the 60s and beyond? (I'm assuming "yes", but if I knew, I wouldn't be posting this.)

BTW, this is above and beyond the basic recommendations in the guides. If a guide says "this spell is ****, don't get it", then obviously I'm not going to get it either way.