I would say a yes if you are a builder and play on console or PC without custom content. While I think the items are a little bland and lack finer details they are useful to mix in with the existing packs. The toaster oven I have not used yet, maybe it will be good for break rooms at the hospital or science lab. It feels really out of place in an interior design themed pack.
If you are on PC and use cc you do not probably need this pack just for the new furniture and decor. Maxis match and Alpha-style sectionals, shelving and separate oven/stove tops and better kitchen counters/cabinets are widely available for free.
If you are looking for new gameplay I would say no or wait for a discount. I am playing on console so I know mods are not the issue. It is glitchy. Several times I had my sim try to do the big reveal to have the game skip it and jump right to final results. Part of the fun is watching your clients look around and then seeing their reactions. There is a moodlet where you know the results before the final verdict, you do not need to click on it but I wish the devs left it out. The tension of do they like it is the whole point. There is nothing for your sim to do career-wise between gigs except write interior design articles or watch the new HGTV-like channel. If you have Get Famous you can create videos or with Get to Work you can run a furniture store so that could help flesh things out.
Also I do not think game mechanics are explained well, for example no new floor tiles makes you think you can not change the flooring itself but it really means you can not expand the room. I see addition I think add-on as in exterior, not creating a new room within the existing interior. To sum it up I would wait for a discount or maybe get it in a bundle.