That may be but when it comes to dragons just getting them BIG isn't always enough especially if you're delaying when you get them. Four drops are when you just start getting into dragons who might actually fight and if you can get the "comes into play" utility and other synergies going I'm not sure you have time. I'll admit that for a Modern format (this is really more of a "fun" deck than anything I'd expect to win a cut-throat competition with) the 3 toughness of many of my creatures isn't enough to save them from Lightning Bolts that probably should be expected but with a threat of Haste a 4/4 flier might be fast enough. If not there's the "go wide" option of 5/5 tokens. Did get a Crucible if I want to try this.
Recently saw a couple artifact creatures that can be cheap "dragons" and provide a boost to them if I look at enhancing the dragons.
If I'm going to improve on this I'm wondering if I should throw in a set of
Talisman of Impulse (or another red talisman) to provide more ramp that wouldn't be subject to creature removal like the Servants are. Of course taking out a servant just slows the dragons down but is less removal for them.